Corel Painter 2019 lost the support or what?

Hi! Did Corel Painter 2019 lost the support? Bc it felt like it did. Yestreday everyhing was fine and then boom, Dec 1st, programm does not want to start (its shutting down after the "title picture" and tab bar shows up) and neither want to reinstall 

Everything works fine on my device, beside that Corel Painter. 

Eh...